Improvement in minersj lamps



w. McCLAVE.

Miners Lamp. No. 49,477. Patented Aug. 1

FIG. 1

N. Farms Fholoikhogmp'wr. Washington. uc.

UNITED STATES PATENT OFFICE.

WM. MCGLAVE, OF HYDE PARK, ASSIGNOR TO WM. P. GONNELL AND WM. M.SILKMAN, OF SORANTON, PENNSYLVANIA.

IMPROVEMENT- IN MINERS LAMPS.

i To all whom it may concern.-

Be it known that I, WILLIAM MCCLAVE, of Scotland, now residing at HydePark, in the county of Luzerne and State of Pennsylvania, have inventeda new and useful Improvement in Miners Lamp; and 1 do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawings, forming part of thisspecification in which- Figure 1, front elevation of my improved lampattached to a miners hat; Fig. 2, side elevation of my improvement; Fig.3, plan view ofthe same; Fig. 4, diagram showing the ordinary minerslamp.

Similar letters of reference indicate like parts.

The object of this improvement is to increase the stability of theminers lamp when attached to the hat of the miner, and thus to preventthe loss of oil occasioned by the swaying and unsteadiness of such lampsas commonly formed, carried, or supported.

Theordinary miners lamp consistsof a small cylindrical oil-vessel havinga wick-spout attachedat one side and a hook at the other side, by whichhook the lamp is attached to the miners hat or cap. When such lamps arehooked upon the miners hat they immediately fall down into a pendulousinclined position, and on the least motion of the miner thelamp rollsand flaps about, causing the oil to be thrown out of the vessel andwasted. The

cylindrical form of the oil-vessel assists rather than prevents suchinclined position and rolling motion. It will be readily understood thatthe inclined position and the rolling motion must result in the overflowand waste of oil from the wick-tube, besides preventing steadiness inthe flame of the lamp.

Fig. 4 shows the common form andinclined position of the ordinary minerslamp.

My improvement is designed to overcome the above objections.

Referring to Figs. 1, 2, 3,1 make the oil-vessel A in the form of ahollow disk, and upon the back disk-plate, a, of the oilvessel l attachthe hook B,by which the lamp is fastened to the miners hat. usual form,projects from the front disk-plate, b, of the oil-vessel. I make theback plate, a, slightly concave, so that when the lamp is attached tothe miners hat it will conform to and fit the convex form of the minersforehead. The broad surface of the back disk-plate,a, imparts greatsteadiness to the oil-vessel and prevents all rolling motion thereof,while the hook, which is centrally attached, preserves the lamp in anupright position. All loss and waste of oil are thus prevented and'thelamp burns with a steadier motion.

The front disk-plate, b, may be made slightly convex to give additionalstrength to the lamp.

The bottom of the lamp may be provided with a fiat plate, 0, to form abottom for the lamp to set upon when removed from the hat.

My improved lamp is provided with the usual aperture in the top forfilling, and the usual hinged cap to close such aperture.

Having thus described my invention,Iclaim as new and desire to secure byLetters Patent A miners lamp made substantiallyas herein shown anddescribed.

The above specification of my invention signed by me this 5th day ofMay, 1865.

WILLIAM MGCLAVE.

Witnesses:

ISRAEL AYERS, CHARLES C. P. LITTELL.

The wick-tube G, of the

